Dyeing and finishing of textiles



Patented Feb. 13, 1945 umrao sures PATENT ornca 2,369,613 I Drama AND rmrsnmc or 'rnx'rmns Ernst Schubert, Jonsdori, near Zittan, and Heinz Pierer,zittau, Germany; vested in the Alien Property Custodian No Drawing, Application was. 24, 1941,.Serial vNo. 416,423. In Yugoslavia January 10, 1941 1 Claim.

The present invention relates to a method of simultaneously dyeing and finishing textile materials whereby a series of valuable effects is attained.

To obtain ordinary eifects, as for instance proofness against creasing, a slight shrinkage or also to ensure a; proofness against swelling, to attain a matte surface or the like, it is well known to finish textile materials .by means of phenolaldehyde artificial resins or urea-aldehyde artificial resins by soaking in impregnating the fabric with a solution containing artificial resins or products of artificial resins, wherein aqueous solutions are used. The operation may also be carried out by applying to the fiber, components which'will form a resin. The impregnated fabric is then subjected to a heat treatment and thereby the artificial resins are either hardened or initially formed upon the fibre.

These finishing methods are carried out as final methods and hitherto were applied in con-' nection with dyed fabric only after termination of the dyeing method. Only a limited number of genuine'dye-stuifs was available for dyeing textile materials which later were to be subjected to an artificial resin finishing treatment.

Now, according to the present invention a method is proposed which permits carrying out simultaneously, in one and the same operation, a dyeing and a finishing method by means of artificial resins by applying the dyestufi and the artificial resin to the fibre by a single bath, wherewith in some cases the fabric is previously treated with a salt which can combine with a component for forming the dye-stuif which is applied to the fibre by the same bath asv the artificial resin.

-- and which are capable of hardening to form the final resin when heated. T- For instance, if alkali a preliminary product of an artificial resin is soluble in pure water or not, but it must be soluble in the diluted alkali solution present at the addition of the catalyzer. The textile material to be treated is impregnated with this dye bath and subjected to a heat treatment for the purpose of forming and hardening the final artificial resin.

A plurality of resins may be applied to the fibre, for instance by impregnating with a solution containing .both the original components for the formation of the one resin and the original components for the formation of another resin or a resin product.

It is surprising that the presence of the dyestufi does not disturb the finishing operation and does'not interfere with the finishing effects and t that, moreover, the presence of artificial resin v This method has the advantage that dyeing efle'cts of substantially better propis used as cataiyzer it is of no importance whether does not interfere with the dyeing, but on the contrary under certain conditions leads to dyeing effects-of improved properties for instance with regard to genuineness.

The following examples show preferred modifications of the invention.

Example 1 g. of dimethylol urea, 6 g. of ammonium sulphate, 14 g. o.o'-benzidine sulpho acid-2 gram nitro-m-phenylene di-amine are dissolved to 1000 cm. water, the textile material is impregnated with this solution, squeezed, dried and then heated to C. to formxthe resin. A bright orange color and at the same time an excellent finishing eifect result.

Example 2 60 g. of dicyanogen-di-amide, 98g. of 40 per a cent formaldehyde solution, 10 g. of poly-vinyl alcohol, 6 g. of 1.3.8.naphthol-di-su1pho acid, 8 g. of cupric sulphate, 5g. of tartaric acid are dissolved in 1000 cm! of water and treated as described in Example 1. A blue color results.

Example 3 40 g. of phenol,- 66 g. of formaldehyde, 8 g. of waste sulphite liquor, 6 g. of 25% ammonia solution, 4 g. of p-naphthol di-sulpho acid 2.6.8. are dissolved in 1000 cm. of water and treated as described in the preceding examples. A red color and at the same'timeexcellent finishing effects, as reduced swelling ability, etc., result.

Example 4 A fabric treated in the'manner usual in the textile industry with carbazole hydroxycarboxylic ecidarylideiadriedandthenaubiectedtoa t in a bath of the following composition:

To 1000 cm. 01' water, 12 e. of 4-amiuo-1- benmyl-amine-3-methoxy-6 methyibenzene, prepared by the usual diazotizing, 100 g'. of urea, 140 g. of 40 per cent tormaldelwde solution, 6 g. of acetic acid. 2 s. of ammonium phosphate.

The textile material is impregnated with this solution and the dye-stun is developed to a genuine dark blue with simultaneous applyinx of the subatanceiormingtheartiiicialresin. Byasubeequent thermal maturing, the artificial resin is nnally formed.

What we claim is:

Inthemethod otiiyeinzandatthesametime HEINZPIERER. 

